42-467-30845

PRODUCING

SWAIN O. L. 11 B

VAN ZANDT County · District 5 · BASA RESOURCES INC. · VAN (PECAN GAP)

Permits

Max Depth

2,800 ft

First Permit

1991-11-06

Latest Activity

2002-01-22

Lifespan

10 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2002-02-01

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Permit operator mismatch

Scheduling: BASA RESOURCES INC. ≠ Permit: UNION OIL COMPANY OF CALIFORNIA

Resolved via: production → BASA RESOURCES, INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

UNION OIL COMPANY OF CALIFORNIA 1993-2015→ BASA RESOURCES, INC. 2022-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (5) Elevation 461 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
NACATOCH	1,270 ft	-809 ft
PECAN GAP	1,681 ft	-1,220 ft
PECAN GAP	1,815 ft	-1,354 ft
AUSTIN CHALK	2,076 ft	-1,615 ft
AUSTIN CHALK	2,400 ft	-1,939 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (5)

Interval	Type
1,773–1,784 ft	Perforated
1,789–1,801 ft	Perforated
1,804–1,808 ft	Perforated
1,814–1,822 ft	Perforated
2,076–2,274 ft	Perforated

Casing (2)

Size	Set Depth	Cement
7.625"	458 ft	171 sx
4.5"	2,355 ft	420 sx

Permit History (2)

#517013 Recompletion Final Completion

SWAIN, O. L. 11B · 2,300 ft

2002-01-22

Spud 2002-01-23

#393707 Drill Final Completion

SWAIN, O. L. 11B · 2,800 ft

1991-11-06

Spud 1991-11-15

Applications (2)

#517013 A UNION OIL COMPANY OF CALIFORNIA

received 2002-01-22

#393707 A UNOCAL EXPLORATION CORPORATION

received 1991-11-06

Records & Logs

4 completion filings on record · 2 with log images at RRC.

W-2/G-1 2002-03-05 log on file

W-2/G-1 2002-03-13

W-2/G-1 1991-12-30 log on file

W-2/G-1 1992-03-17

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in VAN ZANDT County.

Well Details

Well Number: 19
Max Depth: 2,800 ft
Drill Type: Vertical
County: VAN ZANDT
District: 5
Operator: BASA RESOURCES INC.
Completed: 2002-02-01

Operator

Name: BASA RES, INC
Location: DALLAS
P-5 Status: Active (filed 2026-02-12)
Cum Oil (all leases): 79,953,285 bbl
Cum Gas (all leases): 41,318,604 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 471